§  90.531   Band plan.

   This section sets forth the band plan for the 758-775 MHz and 788-805
   MHz public safety bands.

   (a) Base and mobile use. The 763-775 MHz band may be used for base,
   mobile or fixed (repeater) transmissions. The 793-805 MHz band may be
   used only for mobile or fixed (control) transmissions.

   (b) Narrowband segments. There are two band segments that are
   designated for use with narrowband emissions. Each of these narrowband
   segments is divided into 960 channels having a channel size of 6.25 kHz
   as follows:
   Frequency range Channel Nos.
   769-775 MHz            1-960
   799-805 MHz         961-1920

   (1) Narrowband interoperability channels. The following narrowband
   channels are designated for nationwide interoperability licensing and
   use: 23, 24, 39, 40, 63, 64, 79, 80, 103, 104, 119, 120,143, 144, 159,
   160, 183, 184, 199, 200, 223, 224, 239, 240, 263, 264, 279, 280, 303,
   304, 319, 320, 641, 642, 657, 658, 681, 682, 697, 698, 721, 722, 737,
   738, 761, 762, 777, 778, 801, 802, 817, 818, 841, 842, 857, 858, 881,
   882, 897, 898, 921, 922, 937, 938, 983, 984, 999, 1000, 1023, 1024,
   1039, 1040, 1063, 1064, 1079, 1080, 1103, 1104, 1119, 1120, 1143, 1144,
   1159, 1160, 1183, 1184, 1199, 1200, 1223, 1224, 1239, 1240, 1263, 1264,
   1279, 1280, 1601, 1602, 1617, 1618, 1641, 1642, 1657, 1658, 1681, 1682,
   1697, 1698, 1721, 1722, 1737, 1738, 1761, 1762, 1777, 1778, 1801, 1802,
   1817, 1818, 1841, 1842, 1857, 1858, 1881, 1882, 1897, 1898.

   (i) Narrowband data Interoperability channels. The following channel
   pairs are reserved nationwide for the express purpose of data
   transmission only: 279/1239, 280/1240, 921/1881, and 922/1882.

   (ii) Narrowband calling Interoperability channels. The following
   channel pairs are dedicated nationwide for the express purpose of
   Interoperability calling only: 39/999, 40/1000, 681/1641, and 682/1642.
   They may not be used primarily for routine, day-to-day communications.
   Encryption is prohibited on the designated calling channels.

   (iii) Narrowband trunking Interoperability channels. The following
   Interoperability channel pairs may be combined with the appropriate
   adjacent secondary trunking channel pairs and used in trunked mode on a
   secondary basis to conventional Interoperability operations: 23/983,
   24/984, 103/1063, 104/1064, 183/1143, 184/1144, 263/1223, 264/1224,
   657/1617, 658/1618, 737/1697, 738/1698, 817/1777, 818/1778, 897/1857,
   898/1858. For every ten general use channels trunked at a station,
   entities may obtain a license to operate in the trunked mode on two of
   the above contiguous Interoperability channel pairs. The maximum number
   of Interoperability channel pairs that can be trunked at any one
   location is eight.

   (2) Narrowband reserve channels. The following narrowband channels are
   undesignated and reserved: 37, 38, 61, 62, 77, 78, 117, 118, 141, 142,
   157, 158, 197, 198, 221, 222, 237, 238, 277, 278, 301, 302, 317, 318,
   643, 644, 683, 684, 699, 700, 723, 724, 763, 764, 779, 780, 803, 804,
   843, 844, 859, 860, 883, 884, 923, 924, 939, 940, 997, 998, 1021, 1022,
   1037, 1038, 1077, 1078, 1101, 1102, 1117, 1118, 1157, 1158, 1181, 1182,
   1197, 1198, 1237, 1238, 1261, 1262, 1277, 1278, 1603, 1604, 1643, 1644,
   1659, 1660, 1683, 1684, 1723, 1724, 1739, 1740, 1763, 1764, 1803, 1804,
   1819, 1820, 1843, 1844, 1883, 1884, 1899, 1900.

   (3) Narrowband low power channels subject to regional planning. The
   following narrowband channels are designated for low power use for
   on-scene incident response purposes using mobiles and portables subject
   to Commission-approved regional planning committee regional plans.
   Transmitter power must not exceed 2 watts (ERP): Channels 1-8 paired
   with Channels 961-968, and Channels 949-958 paired with Channels
   1909-1918.

   (4) Narrowband low power itinerant channels. The following narrowband
   channels are designated for low power use for on-scene incident
   response purposes using mobiles and portables. These channels are
   licensed nationwide for itinerant operation. Transmitter power must not
   exceed 2 watts (ERP): Channels 9-12 paired with Channels 969-972 and
   Channels 959-960 paired with Channels 1919-1920.

   (5) Narrowband state channels. The following narrowband channels are
   designated for direct licensing to each state (including U.S.
   territories, districts, and possessions): 25-36, 65-76, 105-116,
   145-156, 185-196, 225-236, 265-276, 305-316, 645-656, 685-696, 725-736,
   765-776, 805-816, 845-856, 885-896, 925-936, 985-996, 1025-1036,
   1065-1076, 1105-1116, 1145-1156, 1185-1196, 1225-1236, 1265-1276,
   1605-1616, 1645-1656, 1685-1696, 1725-1736, 1765-1776, 1805-1816,
   1845-1856, 1885-1896. Voice operations on these channels are subject to
   compliance with the spectrum usage efficiency requirements set forth in
   §  90.535(d).

   (6) Narrowband general use channels. All narrowband channels
   established in paragraph (b) of this section, other than those listed
   in paragraphs (b)(1), (b)(2), (b)(4) and (b)(5) of this section are
   designated to public safety eligibles subject to Commission approved
   regional planning committee regional plans. Voice operations on these
   channels are subject to compliance with the spectrum usage efficiency
   requirements set forth in §  90.535(d).

   (7) Secondary trunking channels. The following channel pairs are
   reserved for secondary trunking operations: 21/981, 22/982, 101/1061,
   102/1062, 181/1141, 182/1142, 261/1221, 262/1222, 659/1619, 660/1620,
   739/1699, 740/1700, 819/1779, 820/1780, 899/1859, and 900/1860. They
   may be used only in combination with the appropriate adjacent
   Interoperability channel pairs specified in paragraph (b)(1)(iii) of
   this section in trunked systems.

   (c) [Reserved]

   (d) Combining channels. Except as noted in this section, at the
   discretion of the appropriate regional planning committee, contiguous
   channels may be used in combination in order to accommodate
   requirements for larger bandwidth emissions, in accordance with this
   paragraph. Interoperability channels may not be combined with channels
   in another group except for channels for secondary trunking channels.

   (1) Narrowband. Subject to compliance with the spectrum usage
   efficiency requirements set forth in §  90.535, two or four contiguous
   narrowband (6.25 kHz) channels may be used in combination as 12.5 kHz
   or 25 kHz channels, respectively. The lower (in frequency) channel for
   two channel combinations must be an odd ( i.e., 1, 3, 5 *  *  *)
   numbered channel. The lowest (in frequency) channel for four channel
   combinations must be a channel whose number is equal to 1+(4xn), where
   n = any integer between 0 and 479, inclusive ( e.g., channel number 1,
   5, *  *  * 1917). Channel combinations are designated by the lowest and
   highest channel numbers separated by a hyphen, e.g., “1-2” for a two
   channel combination and “1-4” for a four channel combination.

   (2) [Reserved]

   (e) Channel pairing. In general, channels must be planned and assigned
   in base/mobile pairs that are separated by 30 MHz. However, until
   December 31, 2006, channels other than those listed in paragraphs
   (b)(1) and (c)(1), may be planned and assigned in base/mobile pairs
   having a different separation, where necessary because 30 MHz
   base/mobile pairing is precluded by the presence of one or more
   co-channel or adjacent channel TV/DTV broadcast stations.

   (f) Internal guard band. The internal guard band (768-769/798-799 MHz)
   is reserved.

   (g) Broadband. The 758-768 MHz and 788-798 MHz bands are allocated for
   broadband communications.

   [ 63 FR 58651 , Nov. 2, 1998, as amended at  65 FR 66654 , Nov. 7, 2000;  66 FR 10635 , 10636, Feb. 16, 2001;  67 FR 61005 , Sept. 27, 2002;  67 FR 76700 , Dec. 13, 2002;  72 FR 48860 , Aug. 24, 2007;  77 FR 62463 , Oct. 15,
   2012]

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